55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
#!/usr/bin/env python
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# This file is part of ROBOTGAME
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#
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# ROBOTGAME is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# ROBOTGAME is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# ROBOTGAME. If not, see <http://www.gnu.org/licenses/>.
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#
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# ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
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#
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# direction.py
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# --------------------
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# date created : Tue Aug 7 2012
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# copyright : (C) 2012 Niels G. W. Serup
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# maintained by : Niels G. W. Serup <ns@metanohi.name>
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"""Directions."""
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class Direction(object):
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@staticmethod
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def next_pos(pos):
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raise NotImplementedError
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class Up(Direction):
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@staticmethod
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def next_pos(pos):
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x, y = pos
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return x, y - 1
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class Right(Direction):
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@staticmethod
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def next_pos(pos):
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x, y = pos
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return x + 1, y
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class Down(Direction):
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@staticmethod
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def next_pos(pos):
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x, y = pos
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return x, y + 1
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class Left(Direction):
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@staticmethod
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def next_pos(pos):
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x, y = pos
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return x - 1, y
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